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/*
* Common modutils related functions for busybox
*
* Copyright (C) 2008 by Timo Teras <timo.teras@iki.fi>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
#ifndef MODUTILS_H
#define MODUTILS_H 1
#include "libbb.h"
PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
/* linux/include/linux/module.h has 64, but this is also used
* internally for the maximum alias name length, which can be quite long */
#define MODULE_NAME_LEN 256
#define MODULE_HASH_SIZE 256
typedef struct module_entry {
struct module_entry *next;
char *name, *modname;
llist_t *deps;
IF_MODPROBE(
llist_t *realnames;
unsigned flags;
const char *probed_name; /* verbatim as seen on cmdline */
char *options; /* options from config files */
)
IF_DEPMOD(
llist_t *aliases;
llist_t *symbols;
struct module_entry *dnext, *dprev;
)
} module_entry;
typedef struct module_db {
module_entry *buckets[MODULE_HASH_SIZE];
} module_db;
#define moddb_foreach_module(db, module, index) \
for ((index) = 0; (index) < MODULE_HASH_SIZE; (index)++) \
for (module = (db)->buckets[index]; module; module = module->next)
module_entry *moddb_get(module_db *db, const char *s) FAST_FUNC;
module_entry *moddb_get_or_create(module_db *db, const char *s) FAST_FUNC;
void moddb_free(module_db *db) FAST_FUNC;
void replace(char *s, char what, char with) FAST_FUNC;
char *replace_underscores(char *s) FAST_FUNC;
int string_to_llist(char *string, llist_t **llist, const char *delim) FAST_FUNC;
char *filename2modname(const char *filename, char *modname) FAST_FUNC;
#if ENABLE_FEATURE_CMDLINE_MODULE_OPTIONS
char *parse_cmdline_module_options(char **argv, int quote_spaces) FAST_FUNC;
#else
# define parse_cmdline_module_options(argv, quote_spaces) ""
#endif
/* insmod for 2.4 and modprobe's options (insmod 2.6 has no options at all): */
#define INSMOD_OPTS \
"vqs" \
IF_FEATURE_2_4_MODULES("Lfkx" IF_FEATURE_INSMOD_LOAD_MAP("m"))
#define INSMOD_ARGS /* (was meant to support -o NAME) , NULL */
enum {
INSMOD_OPT_VERBOSE = (1 << 0),
INSMOD_OPT_SILENT = (1 << 1),
INSMOD_OPT_SYSLOG = (1 << 2),
//INSMOD_OPT_OUTPUTNAME = (1 << x) - not supported yet
INSMOD_OPT_LOCK = (1 << 3) * ENABLE_FEATURE_2_4_MODULES,
INSMOD_OPT_FORCE = (1 << 4) * ENABLE_FEATURE_2_4_MODULES,
INSMOD_OPT_KERNELD = (1 << 5) * ENABLE_FEATURE_2_4_MODULES,
INSMOD_OPT_NO_EXPORT = (1 << 6) * ENABLE_FEATURE_2_4_MODULES,
INSMOD_OPT_PRINT_MAP = (1 << 7) * ENABLE_FEATURE_INSMOD_LOAD_MAP,
INSMOD_OPT_UNUSED =
(INSMOD_OPT_PRINT_MAP ? INSMOD_OPT_PRINT_MAP
: INSMOD_OPT_NO_EXPORT ? INSMOD_OPT_NO_EXPORT
: INSMOD_OPT_SYSLOG
) << 1
};
#if ENABLE_FEATURE_INSMOD_TRY_MMAP
void* FAST_FUNC try_to_mmap_module(const char *filename, size_t *image_size_p);
#else
# define try_to_mmap_module(filename, image_size) NULL
#endif
/* Return:
* 0 on success,
* -errno on open/read error,
* errno on init_module() error
*/
int FAST_FUNC bb_init_module(const char *module, const char *options);
/* Return:
* 0 on success,
* errno on init_module() error
*/
int FAST_FUNC bb_delete_module(const char *module, unsigned int flags);
/* Translates error return to a string */
const char *moderror(int err) FAST_FUNC;
#if ENABLE_FEATURE_2_4_MODULES
int FAST_FUNC bb_init_module_24(const char *module, const char *options);
#endif
POP_SAVED_FUNCTION_VISIBILITY
#endif
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